Borough of Princeton Weather Forecast

    • 65
    • 88

    Partly Sunny

    • 61
    • 90

    Rain Showers Likely

    • 56
    • 77

    Partly Sunny

    • 57
    • 79

    Partly Sunny

    • 61
    • 81

    Chance Thunderstorms

    • 66
    • 90

    Chance Thunderstorms

    • 61
    • 85

    Chance Rain Showers

Today 13 Jun Mercer

Sunny, hot with Highs in the upper 80s. Northwest Winds around 5 Mph.

Tonight 13 Jun Mercer

Mostly clear this Evening, then becoming partly cloudy. Lows in the mid 60s. West Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Borough of Princeton Temperature Statistics

June Temperature

Trenton, Mercer County Airport (9.3 miles)

  • Lowest 2 June, 2026

    46.7 °F

  • Average June

    71.1 °F

  • Highest 11 June, 2026

    93 °F

Climate (2021–Present)

Trenton, Mercer County Airport (9.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    64.4 °F
Get WillyWeather+ to remove ads